冻融与碳化交替作用下的混凝土性能试验  

Tests for properties of concrete under alternate freeze-thaw and carbonation actions

作　　者：蒋林华[1] 那彬彬[1] 周晓明[1] 王涛[1] 胡杰[1] 熊传胜[1] 

机构地区：[1]河海大学力学与材料学院,江苏南京210098

出　　处：《水利水电科技进展》2012年第4期33-36,共4页Advances in Science and Technology of Water Resources

基　　金："十一五"国家科技支撑计划(2006BAB04A05);国家自然科学基金(50978085;50808066)

摘　　要：为了研究冻融与碳化同时作用下混凝土的耐久性,采用冻融和碳化交替作用的方法对不同水胶比、不同粉煤灰掺量的混凝土进行抗冻性能和抗碳化性能试验。试验结果表明:冻融与碳化交替作用下混凝土碳化深度不再服从时间的二次方根的发展趋势,而是随着交替次数的增加发展得更快;冻融作用所占比例越大,混凝土损伤越快,碳化也越严重。In order to investigate the concrete durability under combined freeze-thaw and carbonation actions, concrete tests with different water-cement ratios and fly ash contents were performed under the alternate freeze-thaw and carbonation actions. The results show that the carbofiation depth under the alternate actions does not follow a square-root-of-time trend, but increases faster with alternate times. With the increase of the free-thaw percentage, the concrete is damaged faster and its carbonation is more significant.

关 键 词：混凝土 冻融 碳化 耐久性 

分 类 号：TU528[建筑科学—建筑技术科学]